Bridge support and replacement method thereof

Abstract

The invention relates to a bridge support and a replacement method thereof. The bridge support comprises: a lower support body, which is provided with a replacement groove, wherein a detachable push block is installed in the replacement groove; an upper support, wherein a moving space is formed between the lower support and the upper support, and the moving space communicates with the replacement groove; and rolling bodies, which are mounted on the upper surface of the lower support, and are in contact with the lower surface of the upper support, wherein when the push block moves out of the replacement groove, a part of the rolling bodies can enter the replacement groove, and when the push block is installed in the replacement groove, the rolling bodies can roll back and forth in the moving space. Due to the fact that the rolling bodies can roll and rolling friction is smaller than sliding friction, large displacement between a bridge floor and a bridge pier can be achieved; and due to the fact that only a part of the rolling bodies are allowed to fall into the replacement groove, when a part of the rolling bodies are being replaced, other rolling bodies keep supporting the upper support, and therefore, the bridge support can be replaced without jacking.

Description

technical field [0001] The invention relates to the technical field of bridge supports, in particular to a bridge support and a replacement method thereof. Background technique [0002] At present, bridge supports are arranged between the superstructure of the bridge and the piers, the purpose of which is to transmit the supporting reaction force of the superstructure, including the vertical force and horizontal force caused by dead load and live load; , Temperature changes, concrete shrinkage and creep and other factors can be freely deformed, so that the actual stress of the upper and lower structures conforms to the static diagram of the structure. [0003] In the related art, in order to meet the relative displacement between the upper structure of the bridge and the abutment, a polytetrafluoroethylene slide plate or a greased sliding surface is used in the bridge support to realize the requirement of sliding between the upper and lower seats of the bridge support. [0...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a bridge support and its replacement method to solve the problem that in the related art, grease or the surface layer of the skateboard will be lost due to sliding. When the wear reaches a certain level, the support needs to be replaced, and the bridge needs to be lifted when replacing the support. technical problems that not only hinder the traffic on the bridge, but also may damage the bridge deck

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